[INFO] updating cached repository mmiecz/rust-utf-bytes
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/mmiecz/rust-utf-bytes
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/mmiecz/rust-utf-bytes" "work/ex/beta-1.38-1/sources/1.37.0/gh/mmiecz/rust-utf-bytes"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/mmiecz/rust-utf-bytes'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/mmiecz/rust-utf-bytes" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/mmiecz/rust-utf-bytes"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/mmiecz/rust-utf-bytes'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 5faecb73eff2bdd9c7172a0bd24d32fc1216c9be
[INFO] sha for GitHub repo mmiecz/rust-utf-bytes: 5faecb73eff2bdd9c7172a0bd24d32fc1216c9be
[INFO] validating manifest of mmiecz/rust-utf-bytes on toolchain 1.37.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of mmiecz/rust-utf-bytes on toolchain beta-2019-08-13
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing mmiecz/rust-utf-bytes
[INFO] finished frobbing mmiecz/rust-utf-bytes
[INFO] frobbed toml for mmiecz/rust-utf-bytes written to work/ex/beta-1.38-1/sources/1.37.0/gh/mmiecz/rust-utf-bytes/Cargo.toml
[INFO] started frobbing mmiecz/rust-utf-bytes
[INFO] finished frobbing mmiecz/rust-utf-bytes
[INFO] frobbed toml for mmiecz/rust-utf-bytes written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/mmiecz/rust-utf-bytes/Cargo.toml
[INFO] crate mmiecz/rust-utf-bytes already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr] error: the lock file /mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/mmiecz/rust-utf-bytes/Cargo.lock needs to be updated but --locked was passed to prevent this
[INFO] the lockfile is outdated, regenerating it
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] testing mmiecz/rust-utf-bytes against 1.37.0 for beta-1.38-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-7/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/mmiecz/rust-utf-bytes:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+1.37.0" "build" "--frozen"`
[INFO] [stdout] e1e56d59f81d6528efbd68a49e08d23f17872234803935793f471497d3127813
[INFO] running `"docker" "start" "-a" "e1e56d59f81d6528efbd68a49e08d23f17872234803935793f471497d3127813"`
[INFO] [stderr]    Compiling rust-utf-bytes v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: function is never used: `is_ranged`
[INFO] [stderr]   --> src/main.rs:18:1
[INFO] [stderr]    |
[INFO] [stderr] 18 | fn is_ranged(s: &str) -> bool {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.27s
[INFO] running `"docker" "inspect" "e1e56d59f81d6528efbd68a49e08d23f17872234803935793f471497d3127813"`
[INFO] running `"docker" "rm" "-f" "e1e56d59f81d6528efbd68a49e08d23f17872234803935793f471497d3127813"`
[INFO] [stdout] e1e56d59f81d6528efbd68a49e08d23f17872234803935793f471497d3127813
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-7/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/mmiecz/rust-utf-bytes:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+1.37.0" "test" "--frozen" "--no-run"`
[INFO] [stdout] cc302cd5b9016bd74e6a066704237227929032961d83843d09b6cef7b2ca7a75
[INFO] running `"docker" "start" "-a" "cc302cd5b9016bd74e6a066704237227929032961d83843d09b6cef7b2ca7a75"`
[INFO] [stderr]    Compiling rust-utf-bytes v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: function is never used: `is_ranged`
[INFO] [stderr]   --> src/main.rs:18:1
[INFO] [stderr]    |
[INFO] [stderr] 18 | fn is_ranged(s: &str) -> bool {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.69s
[INFO] running `"docker" "inspect" "cc302cd5b9016bd74e6a066704237227929032961d83843d09b6cef7b2ca7a75"`
[INFO] running `"docker" "rm" "-f" "cc302cd5b9016bd74e6a066704237227929032961d83843d09b6cef7b2ca7a75"`
[INFO] [stdout] cc302cd5b9016bd74e6a066704237227929032961d83843d09b6cef7b2ca7a75
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-7/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/mmiecz/rust-utf-bytes:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+1.37.0" "test" "--frozen"`
[INFO] [stdout] 110d5d97a11b361bf14646b582987cce197122f180dee1829e0499c20368fbf9
[INFO] running `"docker" "start" "-a" "110d5d97a11b361bf14646b582987cce197122f180dee1829e0499c20368fbf9"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/rust_utf_bytes-177c5608d32093a8
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "110d5d97a11b361bf14646b582987cce197122f180dee1829e0499c20368fbf9"`
[INFO] running `"docker" "rm" "-f" "110d5d97a11b361bf14646b582987cce197122f180dee1829e0499c20368fbf9"`
[INFO] [stdout] 110d5d97a11b361bf14646b582987cce197122f180dee1829e0499c20368fbf9